on my 32 ive got on 18s, the fronts 8.5 offsets 21+ and rears 9.5 offsets 21+
the rears ive flared them 2-3mm out and the fronts im using 20mm fenders.
ive still a fair bit of space left on the rears but the fronts sit flush.
cars lowered by 330mm from the centre cap.
hope that gives u an idea.